Quelle  adf_gen4_pm_debugfs.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2023 Intel Corporation */
#include <linux/dma-mapping.h>
#include <linux/string_helpers.h>

#include "adf_accel_devices.h"
#include "adf_admin.h"
#include "adf_common_drv.h"
#include "adf_gen4_pm.h"
#include "adf_pm_dbgfs_utils.h"
#include "icp_qat_fw_init_admin.h"

#define PM_INFO_REGSET_ENTRY(_reg_, _field_) \
 PM_INFO_REGSET_ENTRY_MASK(_reg_, _field_, ADF_GEN4_PM_##_field_##_MASK)

static const struct pm_status_row pm_fuse_rows[] = {
 PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM),
 PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM_IDLE),
 PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_DEEP_PM_IDLE),
};

static const struct pm_status_row pm_info_rows[] = {
 PM_INFO_REGSET_ENTRY(pm.status, CPM_PM_STATE),
 PM_INFO_REGSET_ENTRY(pm.status, PENDING_WP),
 PM_INFO_REGSET_ENTRY(pm.status, CURRENT_WP),
 PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_ENABLE),
 PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_FILTER),
 PM_INFO_REGSET_ENTRY(pm.main, MIN_PWR_ACK),
 PM_INFO_REGSET_ENTRY(pm.thread, MIN_PWR_ACK_PENDING),
 PM_INFO_REGSET_ENTRY(pm.main, THR_VALUE),
};

static const struct pm_status_row pm_ssm_rows[] = {
 PM_INFO_REGSET_ENTRY(ssm.pm_enable, SSM_PM_ENABLE),
 PM_INFO_REGSET_ENTRY32(ssm.active_constraint, ACTIVE_CONSTRAINT),
 PM_INFO_REGSET_ENTRY(ssm.pm_domain_status, DOMAIN_POWER_GATED),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, ATH_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, CPH_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, PKE_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, CPR_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, DCPR_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, UCS_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, XLT_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, WAT_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_active_status, WCP_ACTIVE_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, ATH_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, CPH_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, PKE_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, CPR_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, DCPR_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, UCS_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, XLT_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, WAT_MANAGED_COUNT),
 PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, WCP_MANAGED_COUNT),
};

static const struct pm_status_row pm_log_rows[] = {
 PM_INFO_REGSET_ENTRY32(event_counters.host_msg, HOST_MSG_EVENT_COUNT),
 PM_INFO_REGSET_ENTRY32(event_counters.sys_pm, SYS_PM_EVENT_COUNT),
 PM_INFO_REGSET_ENTRY32(event_counters.local_ssm, SSM_EVENT_COUNT),
 PM_INFO_REGSET_ENTRY32(event_counters.timer, TIMER_EVENT_COUNT),
 PM_INFO_REGSET_ENTRY32(event_counters.unknown, UNKNOWN_EVENT_COUNT),
};

static const struct pm_status_row pm_event_rows[ICP_QAT_NUMBER_OF_PM_EVENTS] = {
 PM_INFO_REGSET_ENTRY32(event_log[0], EVENT0),
 PM_INFO_REGSET_ENTRY32(event_log[1], EVENT1),
 PM_INFO_REGSET_ENTRY32(event_log[2], EVENT2),
 PM_INFO_REGSET_ENTRY32(event_log[3], EVENT3),
 PM_INFO_REGSET_ENTRY32(event_log[4], EVENT4),
 PM_INFO_REGSET_ENTRY32(event_log[5], EVENT5),
 PM_INFO_REGSET_ENTRY32(event_log[6], EVENT6),
 PM_INFO_REGSET_ENTRY32(event_log[7], EVENT7),
};

static const struct pm_status_row pm_csrs_rows[] = {
 PM_INFO_REGSET_ENTRY32(pm.fw_init, CPM_PM_FW_INIT),
 PM_INFO_REGSET_ENTRY32(pm.status, CPM_PM_STATUS),
 PM_INFO_REGSET_ENTRY32(pm.main, CPM_PM_MASTER_FW),
 PM_INFO_REGSET_ENTRY32(pm.pwrreq, CPM_PM_PWRREQ),
};

static_assert(sizeof(struct icp_qat_fw_init_admin_pm_info) < PAGE_SIZE);

static ssize_t adf_gen4_print_pm_status(struct adf_accel_dev *accel_dev,
     char __user *buf, size_t count,
     loff_t *pos)
{
 void __iomem *pmisc = adf_get_pmisc_base(accel_dev);
 struct adf_pm *pm = &accel_dev->power_management;
 struct icp_qat_fw_init_admin_pm_info *pm_info;
 dma_addr_t p_state_addr;
 u32 *pm_info_regs;
 char *pm_kv;
 int len = 0;
 u32 val;
 int ret;

 pm_info = kmalloc(PAGE_SIZE, GFP_KERNEL);
 if (!pm_info)
  return -ENOMEM;

 pm_kv = kmalloc(PAGE_SIZE, GFP_KERNEL);
 if (!pm_kv) {
  ret = -ENOMEM;
  goto out_free;
 }

 p_state_addr = dma_map_single(&GET_DEV(accel_dev), pm_info, PAGE_SIZE,
          DMA_FROM_DEVICE);
 ret = dma_mapping_error(&GET_DEV(accel_dev), p_state_addr);
 if (ret)
  goto out_free;

 /* Query PM info from QAT FW */
 ret = adf_get_pm_info(accel_dev, p_state_addr, PAGE_SIZE);
 dma_unmap_single(&GET_DEV(accel_dev), p_state_addr, PAGE_SIZE,
    DMA_FROM_DEVICE);
 if (ret)
  goto out_free;

 pm_info_regs = (u32 *)pm_info;

 /* Fusectl related */
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "----------- PM Fuse info ---------\n");
 len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_fuse_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_fuse_rows));
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "max_pwrreq: %#x\n",
    pm_info->max_pwrreq);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "min_pwrreq: %#x\n",
    pm_info->min_pwrreq);

 /* PM related */
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "------------ PM Info ------------\n");
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "power_level: %s\n",
    pm_info->pwr_state == PM_SET_MIN ? "min" : "max");
 len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_info_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_info_rows));
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "pm_mode: STATIC\n");

 /* SSM related */
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "----------- SSM_PM Info ----------\n");
 len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_ssm_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_ssm_rows));

 /* Log related */
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "------------- PM Log -------------\n");
 len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_log_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_log_rows));

 len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_event_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_event_rows));

 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "idle_irq_count: %#x\n",
    pm->idle_irq_counters);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "fw_irq_count: %#x\n",
    pm->fw_irq_counters);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "throttle_irq_count: %#x\n", pm->throttle_irq_counters);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "host_ack_count: %#x\n",
    pm->host_ack_counter);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "host_nack_count: %#x\n",
    pm->host_nack_counter);

 /* CSRs content */
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "----------- HW PM CSRs -----------\n");
 len += adf_pm_scnprint_table_upper_keys(&pm_kv[len], pm_csrs_rows,
      pm_info_regs, PAGE_SIZE - len,
      ARRAY_SIZE(pm_csrs_rows));

 val = ADF_CSR_RD(pmisc, ADF_GEN4_PM_HOST_MSG);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "CPM_PM_HOST_MSG: %#x\n", val);
 val = ADF_CSR_RD(pmisc, ADF_GEN4_PM_INTERRUPT);
 len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
    "CPM_PM_INTERRUPT: %#x\n", val);
 ret = simple_read_from_buffer(buf, count, pos, pm_kv, len);

out_free:
 kfree(pm_info);
 kfree(pm_kv);
 return ret;
}

void adf_gen4_init_dev_pm_data(struct adf_accel_dev *accel_dev)
{
 accel_dev->power_management.print_pm_status = adf_gen4_print_pm_status;
 accel_dev->power_management.present = true;
}